Brazilian Journal of Physics最新文献_第7页

Effect of Magnetic Field and Dzyaloshinskii Moriya Interaction on Quantum Teleportation in Ising Spin Chain 磁场和Dzyaloshinskii Moriya相互作用对Ising自旋链中量子隐形传态的影响

IF 1.7 4区物理与天体物理

Brazilian Journal of Physics Pub Date : 2026-06-05 DOI: 10.1007/s13538-026-02045-3

Maryam Mahmoudi

引用次数: 0

Recognizing the 2026 Outstanding Referees of the Brazilian Journal of Physics 表彰巴西物理杂志2026名杰出裁判

IF 1.7 4区物理与天体物理

Brazilian Journal of Physics Pub Date : 2026-06-05 DOI: 10.1007/s13538-026-02109-4

Alberto Saa

引用次数: 0

Analyzing Synchronization in a Linear Coupling of Three Chaotic Hindmarsh-Rose Neurons 三个混沌Hindmarsh-Rose神经元线性耦合中的同步分析

IF 1.7 4区物理与天体物理

Brazilian Journal of Physics Pub Date : 2026-06-04 DOI: 10.1007/s13538-026-02103-w

Antônio J. Fidelis, Cesar Manchein, Paulo C. Rech

{"title":"Analyzing Synchronization in a Linear Coupling of Three Chaotic Hindmarsh-Rose Neurons","authors":"Antônio J. Fidelis, Cesar Manchein, Paulo C. Rech","doi":"10.1007/s13538-026-02103-w","DOIUrl":"10.1007/s13538-026-02103-w","url":null,"abstract":"<div><p>In this paper we investigate synchronization in three linearly coupled chaotic Hindmarsh-Rose neurons. Specifically, we propose a novel continuous-time dynamical system, which is modeled by a set of nine first-order ordinary differential equations, which was obtained by coupling three chaotic Hindmarsh-Rose neurons. The study considered two cases, namely one in which the coupled systems are identical, and one in which they are non-identical. Regardless of the case considered, the coupling functions are such that the three systems interact through unidirectional couplings, with one of the systems acting as a master system, another acting as an interacting system, and the other acting as a slave system. The investigation was carried out by varying the two parameters related to the coupling strengths, namely <span>(beta )</span> and <span>(gamma )</span>. Regions of partial and complete synchronizations were characterized in <span>((beta ,gamma ))</span> parameter planes, by using error functions. These results were corroborated by time series plots that consider all nine variables involved in the investigated system, and also by trajectories in the phase-space.</p></div>","PeriodicalId":499,"journal":{"name":"Brazilian Journal of Physics","volume":"56 4","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13538-026-02103-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148172259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Local-Available Quantum Correlations in a Standard Quantum Correlation Swapping Scheme 标准量子相关交换方案中的本地可用量子相关

IF 1.7 4区物理与天体物理

Brazilian Journal of Physics Pub Date : 2026-06-02 DOI: 10.1007/s13538-026-02104-9

Hermann L. Albrecht

{"title":"Local-Available Quantum Correlations in a Standard Quantum Correlation Swapping Scheme","authors":"Hermann L. Albrecht","doi":"10.1007/s13538-026-02104-9","DOIUrl":"10.1007/s13538-026-02104-9","url":null,"abstract":"<div><p>Although introduced for entanglement, quantum repeaters and swapping protocols have been analyzed for other quantum correlations (QC), such as quantum discord. Introduced by Mundarain and Ladrón de Guevara [43], local-available quantum correlations (LAQC) are a type of residual quantum correlation mostly overlooked in the literature. Recently, Bellorin et al. [44, 45] obtained exact analytical results for its measure for general 2-qubit X states. Building on those results, we analyzed the behavior of this measure in a standard quantum correlation swapping (QCS) protocol, focusing on 2-qubit X states as the initial states. As expected, we find that if the initial states are non-classical and the one used for the projective measurement is entangled, the final state will, in general, have non-zero LAQC. Using its properties, we establish the conditions required for the final state in the QCS scheme having a non-null LAQC measure. We illustrate these results by analyzing six relevant families of one-parameter 2-qubit X states. Within those examples, we included mixed states that result in a separable state but a non-zero LAQC measure. We also included a separable quantum-correlated mixed state that remains separable and quantum correlated after the QCS scheme.</p></div>","PeriodicalId":499,"journal":{"name":"Brazilian Journal of Physics","volume":"56 4","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148172141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Second-Order Memristor-Based Hyperchaotic Map: Dynamical Analysis, Hardware Implementation and Application in Image Encryption 基于二阶忆阻器的超混沌映射：动态分析、硬件实现及其在图像加密中的应用

IF 1.7 4区物理与天体物理

Brazilian Journal of Physics Pub Date : 2026-06-01 DOI: 10.1007/s13538-026-02105-8

Mengjiao Wang, Yuzhou Liao, Zhijun Li

{"title":"A Second-Order Memristor-Based Hyperchaotic Map: Dynamical Analysis, Hardware Implementation and Application in Image Encryption","authors":"Mengjiao Wang, Yuzhou Liao, Zhijun Li","doi":"10.1007/s13538-026-02105-8","DOIUrl":"10.1007/s13538-026-02105-8","url":null,"abstract":"<div><p>The construction of memristive hyperchaotic maps has long been an important topic in chaos research. Over the past few years, second-order memristors (SOMs) have become a growing focus of research; however, the development of their corresponding discrete maps remains limited. To address this gap, a novel discrete second-order memristor (SOM) model is proposed and coupled with a sine map, resulting in the construction of a three-dimensional second-order memristive sine hyperchaotic map (SOM-SHM). Numerical investigations using phase portraits, Lyapunov exponent spectra (LEs) and bifurcation diagrams (BDs) show that the proposed system exhibits rich nonlinear dynamics in representative parameter regions, including periodic, chaotic, and hyperchaotic behaviors, together with initial-offset boosting. Numerical simulations and NIST test results indicate that the sequences derived from the proposed map exhibit good statistical randomness under the tested conditions. The map is further implemented on an STM32 hardware platform to validate its digital implementability. Finally, an image encryption example based on the SOM-SHM is constructed, and standard diagnostic evaluations are conducted to illustrate its potential application in information processing.</p></div>","PeriodicalId":499,"journal":{"name":"Brazilian Journal of Physics","volume":"56 4","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148172132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dirac Theory as a One-Particle Relativistic Quantum Mechanics in the Space of Unit Two-Component Spinors 单位双组分旋量空间中的单粒子相对论量子力学

IF 1.7 4区物理与天体物理

Brazilian Journal of Physics Pub Date : 2026-05-27 DOI: 10.1007/s13538-026-02101-y

N. L. Chuprikov

引用次数: 0

Reaction Mechanism Effects in the 28Si(18O,16O)30Si Two-Neutron Transfer Reaction 反应机理对28Si(18O,16O)30Si双中子转移反应的影响

IF 1.7 4区物理与天体物理

Brazilian Journal of Physics Pub Date : 2026-05-25 DOI: 10.1007/s13538-026-02097-5

A. Hemmdan, Ghada G. El Deen M. Kandeel, Zakaria M. M. Mahmoud, M. A. Hassanain

{"title":"Reaction Mechanism Effects in the 28Si(18O,16O)30Si Two-Neutron Transfer Reaction","authors":"A. Hemmdan, Ghada G. El Deen M. Kandeel, Zakaria M. M. Mahmoud, M. A. Hassanain","doi":"10.1007/s13538-026-02097-5","DOIUrl":"10.1007/s13538-026-02097-5","url":null,"abstract":"<div><p>The two-neutron transfer <sup>28</sup>Si(<sup>18</sup>O,<sup>16</sup>O)<sup>30</sup>Si reaction is investigated at an incident energy of <i>E</i><sub><i>lab</i></sub>=84 MeV based on three effective nucleon-nucleon (<i>NN</i>) interactions; JLM, SPP2, and density-independent M3Y Reid zero range. The cross-section of the exact finite-range coupled reaction channels (CRC) and coupled channel Born approximation (CCBA) are calculated for the direct and sequential two-neutron transfer. The differential cross-sections for the ground state transition, the first-excited state 2<sup>+</sup> (2.235 MeV) and the sum of excited states 2<sup>+</sup>( 3.498 MeV), 1<sup>+</sup>( 3.769 MeV) and 0<sup>+</sup> (3.788 MeV) in <sup>30</sup>Si residual nucleus are calculated. The obtained cross sections using the spectroscopic amplitudes for the projectile from PSDMOD and ZBM interactions are compared. This comparison revealed that the inclusion of the extended PSDMOD space has a significant effect in the ground state transition and the sum of excited states for the sequential calculations. Moreover, a comparison between coherent and incoherent sum of the direct and sequential calculations is presented. The use of different <i>NN</i> interactions introduces variations in the calculated cross sections; however, these variations do not affect the qualitative conclusions regarding the dominant two-neutron transfer mechanism.</p></div>","PeriodicalId":499,"journal":{"name":"Brazilian Journal of Physics","volume":"56 4","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148009907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Annealing-Induced Structural and Optical Evolution in RF-Sputtered CeO₂ Thin Films 射频溅射CeO 2薄膜退火诱导的结构和光学演化

IF 1.7 4区物理与天体物理

Brazilian Journal of Physics Pub Date : 2026-05-23 DOI: 10.1007/s13538-026-02100-z

Halil İbrahim Efkere

{"title":"Annealing-Induced Structural and Optical Evolution in RF-Sputtered CeO₂ Thin Films","authors":"Halil İbrahim Efkere","doi":"10.1007/s13538-026-02100-z","DOIUrl":"10.1007/s13538-026-02100-z","url":null,"abstract":"<div><p>Cerium dioxide (CeO₂) thin films were deposited onto Corning glass substrates via RF magnetron sputtering. A subset of the samples was retained in the as-deposited state, whereas the remaining subsets were annealed at 400 °C, 600 °C, and 800 °C. The objective of this study is to systematically investigate the influence of post-deposition thermal treatment on the structural, morphological, optical, and photocatalytic characteristics of the films. X-ray diffraction (XRD) analysis revealed that annealing at 600 °C enhanced crystallinity and increased crystallite size, whereas atomic force microscopy (AFM) showed a uniform, densely packed surface morphology. UV–Vis spectroscopy revealed that, considering all sample sets, the optical band gap gradually narrowed from 3.55 ± 0.05 eV (as-deposited) to 3.45 ± 0.05 eV (800 °C). Photocatalytic performance was evaluated by measuring methylene blue d under UV irradiation, with the 600 °C-annealed film achieving the highest degradation efficiency (~ 78%) owing to its superior structural and morphological features. In contrast, annealing at 800 °C led to microstructural reorganization and texture evolution, which adversely affected the photocatalytic activity despite a further reduction in the optical band gap. These results demonstrate that the annealing temperature is a critical parameter for tuning the performance of CeO₂ thin films prepared by RF magnetron sputtering and provide valuable insights into the rational design of sputter-deposited rare-earth oxide thin films for photocatalytic water purification applications.</p></div>","PeriodicalId":499,"journal":{"name":"Brazilian Journal of Physics","volume":"56 4","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148009196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Publisher Correction: Characterization of SnO2 Thin Films deposited with SILAR: Effect of Annealing on Physical Properties 用SILAR沉积的SnO2薄膜的表征：退火对物理性能的影响

IF 1.7 4区物理与天体物理

Brazilian Journal of Physics Pub Date : 2026-05-22 DOI: 10.1007/s13538-026-02099-3

Tuba Çayır Taşdemirci

引用次数: 0

100 Years of Quantum Mechanics: A Special Issue 量子力学100年：特刊

IF 1.7 4区物理与天体物理

Brazilian Journal of Physics Pub Date : 2026-05-20 DOI: 10.1007/s13538-026-02098-4

Rafael Chaves, Thereza Paiva, Marcelo Terra Cunha

引用次数: 0